Lawrence is a Pompous GWR 2900 Saint Class express engine owned by the Dock Railway. He primary pulls fast passenger trains, but he is sometimes pulls heavy goods trains (usually against his will). Hehas been referred to, among other things, Idiot, The Real Disgrace to the GWR, and The Evil GWR 2900 engine. He is basicly the Dock Railway's answer to Top Hat. (The two happen to be casual acquaintances) He hates Clark, and considers him a disgrace to the GWR. Carlos wants Lawrence scrapped and NEVER rebuilt forever.
Lawrence was painted GWR green with red stripes until 2012 were he got repainted into the Nickel Plate Road heritage scheme. In addition, he got a cowcatcher, bell, a American-style whistle, and a fictional NPR number, 7331.